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Home Machine Tool Archive Lathes, Millers, Shapers & Grinders for Sale E-MAIL tony@lathes.co.uk
LACFER LATHES A Handbook and Parts Manual is available for these lathes
Lacfer lathes were made in Spain and, during the 1960 and 1970 their conventional machines, the very similar CR-1 and CR-2 models, found sales in both Europe and America. Cleanly designed with an unusual "gate-change" spindle-speed selector on the front face of the headstock , the CR-2 had a 250mm (10") centre height and a capacity between centres of 1000, 1500 or 2000 mm (39, 59 or 79 inches) The headstock held gears manufactured from hardened chrome-nickel steel with the main 60mm-bore, 6 Morse taper spindle rotating in a pair of super-precision, English-made GAMET taper roller bearings; a ball-race bearing, at the tail of the spindle, was used to absorb end thrust. The spindle nose could be supplied with a variety of fitting but was offered as standard with a DIN 55022 Nt. 6 bolt-on flange type. The headstock internals were lubricated by a suction pump from an oil supply held within the base of the casting with an oil-flow indicator positioned on the front face of the headstock to allow the operator to check that the pump was functioning correctly. Driven by a 10 hp motor the spindle was controlled though a pair of EIDE Type ELA 68 electro-mechanical clutches that also acted to engage a powerful brake. 12 speeds were provided of 25, 40, 55, 75, 110, 190, 270, 360, 600, 1050, 1350 and 1800 rpm. The screwcutting gearbox was totally enclosed and oil-bath lubricated with the selection of feeds and threads by a neat rotary dial and three levers; for 'English-threading' markets the 35mm diameter leadscrew was of 1/4" pitch (or M6 as an option) and as standard 36 metric threads from 0.5 to 7mm pitch, 36 Whitworth threads from 2 to 56 tpi, 24 metric module threads from 0.5 to 7mm and 24 Diametral pitch threads from 4 to 32 tpi could all generated without having to demount or alter the position of any gears on the quadrant arm. The apron was doubled-walled with the base formed as an oil sump and the lubricant distributed to both the lathe bed ways and the various parts shafts and gears within the apron by a pump and controlling valve. The lathe was fitted with a long 'third-shaft', below and parallel to the power shaft, by which means a set of 5 stops could be arranged to automatically disengage the carriage feed at a number of pre-set points. The top slide had a travel was 180mm (it sat upon an unusually deep base) and the cross slide a useful 270mm. At 335 mm wide the lathe bed did not qualify as being of toolroom speciation (where a width equal to twice the centre height would be considered normal) but it was very deep, hardened as standard and carried 3 Vee ways that gave independent guidance to the carriage and tailstock. The tailstock was of specially heavy construction and both its 65mm-diameter spindle, and the bore in which it ran, were hardened and ground; the feed screw was fitted with a zeroing micrometer collar and the large handwheel rim, like that on the carriage drive, was provided with internal finger grips. Standard equipment provided with a new machine consisted of: coolant, fixed and travelling steadies, a set of Allen keys, spanners, oil can, chuck-mounting backplate, a headstock Morse reducing sleeve (6 to 5 MT), two standard hard and soft centres, a slender handbook and sectional parts list and a post-construction inspection chart. Optional extras included a hydraulic coping attachment, semi-automatic threading device, pneumatic chucks and their associated operation equipment, pneumatic tailstock, rear tool holder, cross-feed stops and various kinds of programmed installations to give automatic working cycles or to meet other special requirements. The weights of the standard machines were approximately: 1000mm bed 1900kg.; 1500mm bed 2150kg.; 2000mm bed 2410kg. If any reader can provide further information about lathes of Lacfer manufacture the writer would be very pleased to hear from them..
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